81) Sketchbook Mobile Keep a sketchbook with you wherever you go with this full-featured app from CAD specialist Autodesk. Sketchbook Pro is a professional-grade paint and drawing application with a whole host of tools. It's great for graphic designers on the go. Paid: $0.99.

82) Catch Notes This app, formerly known as 3banana Notes, lets you capture thoughts and ideas in text, voice, images and locations. You can then synch and back it up for free to Catch.com. You can passcode protect your activity stream, set reminders, share content and even organize it with hashtags. Free.

83) Beautiful Widgets Not content with the widgets, themes and skins that came with your Android device? This app is what you need. It features hundreds of downloadable skins. Paid: $2.82.

85) Layar Turn your phone into an Augmented Reality device with Layar. It uses your phone's camera, compass and GPS data to identify your location and field of view, retrieves data based on those geographical coordinates and then layers that data over the camera view. Free.

86) EStrongs File Explorer File Explorer is a local and network file manager that provides a file explorer for both the local phone and your remote computer. You can view files on your phone and in your computer's shared folder and transfer files between them. You can even play audio and video, browse images and view text. Free.

87) SwitchPro Widget This cool little app gives you the ability to control 17 of your Android phone's functions directly from one of your homescreens. You can turn 3G, Wi-Fi and Bluetooth on and off, adjust your screen's brightness, even reload your SD card after transferring files. Free.

89) US Traffic US Traffic provides traffic reports about your neighborhood and works anywhere in the US. It supplies detailed traffic incident information. Free.

90) K-9 Mail An open source project that has taken Google's standard e-mail client and enhanced it, K-9 Mail is a must if you want to do serious non-Gmail-based e-mail management on your phone, especially using IMAP. Free.

91) aTrackDog Have trouble remembering to check for updates to your apps? aTrackDog finds the newest version of all your apps, even ones not listed on the Android Market, and notifies you when they're available. It allows you to open, uninstall and manage your apps, and even tracks your uninstalled apps.

92) AppBrain App Market Want to make managing your apps a little easier? With AppBrain, you can browse for Android apps with a Web interface on a computer, select them and then use the app to install and uninstall the apps you selected. It also provides notifications when updates are available. Free.

93) Kayak Flight and Hotel Search This travel app lets you search multiple airline and deal Web sites for the best price on a flight. You can use it to book your travel, hotel and car rentals, and even to check the status of your flight. Free.

94) Barcode Scanner Scan barcodes on books, CDs, and all sorts of other products and then look up prices and reviews. You can also read the QR codes (little square barcodes) that are popping up everywhere, allowing you to decipher the encoded URLs, contact information, Wi-Fi access codes, calendar events, etc. Free.

95) ShopSavvy Scan a product's barcode and you can get reviews and price alerts using this app. You can also use it to create wishlists. Free.

96) AK Notepad A simple, straightforward notepad application that features Websync to snaptic.com, it does one thing and does it well. Free.

97) Google Goggles Google Goggles is a visual search app. Take a picture of the object, landmark, logo, etc. you want information about and Google Goggles will return relevant search results. It will even provide information about businesses by displaying their names directly in the camera preview. Free.

98) Google Places Directory Take the mystery out of finding nearby places with Google Places Directory. Places Directory allows you to browse nearby places in categories like restaurants, movie theaters, hotels and banks. It also gives you distance and directions along with ratings and photos. Free.

99) Cab4me Find or call a cab quickly, even if you're not in Manhattan. This app keeps a database of local taxi companies and taxi stands and helps you place a call to a car service when you need one. Free.

100) Ringdroid Don't like the default ring tones that come with your Android phone? Ringdroid allows you to record and edit sounds and create ring tones from any song you like. Free.

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